Top-roll-saddle mechanism.



I. W. DOEG. TOP ROLL SADDLE MECHANISM:

APPLICATION FILED JUNE 28, 1909.

Patented May 28, 1912.

BsdckarZdDo 0, WASHINGTON D c UNITED STATES PATENT OFFICE.

ISSACHAR W. DOEG, OF EXETER, NEW HAMPSHIRE.

TOP-ROLL-SADDLE MECHANISM.

Specification of Letters'latent,

Patented May 28, 1912.

Application filed June 28, 1909. Serial No. 504,666.

To all whom it may concern:

Be it known that I, ISSAOHAR W. Done, a

. citizen of the United States, residing at Exeter, county of Rockingham, and State of New Hampshire, have invented an Improvement in Top-Roll-Saddle Mechanism, of which the following description, in connection with the accompanying drawmg, 1s

a specification, like characters onthe drawmg representing like parts.

This invention relates to top roll saddle mechanism and particularly to the fulcrum for the weighted lever. The construction of fulcrum most commonly employed is one involving a screw-threaded shank to screw into the roller beam and a slotted head, into the slot of which the end of the weighted lever is received.- The inevitable continuous movement of the weighted lever causes the fulcrum to wear at the upper side of the slot therewith, and after a comparatively short time, the fulcrum becomes so worn that the lever does not work properly. I have improved fulcrums of this type by making the portion of the fulcrumwith which the lever engages of hardened steel 'or some other non wearable material,so that the life of the fulcrum will be greatly lengthened. In the preferred embodiment of my invention I insert a hardened steel pin in the fulcrum across the upper end of the slot, which pin constitutes the bearing with which the lever engages, and by means of this improvement the fulcrum will'have a greatly increased length of life and there is no danger that the weighted lever will be thrown out of proper position due to wearing of'the fulcrum. I c

In the drawings wherein I have shown one embodiment of my invention, Figure 1 is a-fragmentary perspective view showing a portion of a top roll saddle mechanism embodying my invention; Fig. 2 is an'enlarged sectional view of a fulcrum embodying my invention, said section being taken on substantially the line w-m, Fig.3; Fig. 3 is a section on substantially the line yy, Fig. 2; Fig. 4 is a view partially in section In the drawings, 3 designates the usual top'rolls, 4; the two parts of the top roll saddle, 5 the stirrup which is secured to and depends from said saddle, 6 the weighted lever'which is supported from the stirrup,

showing a different embodiment of the 111- vention.

and 7 the fulcrum which is secured in the roller beam8. These parts with the exception of the fulcrum are or may be of any suitable or usual construction and form no part of my present invention.

The fulcrum is made with the usual screw-threaded shank 9 which screws into the roller beam, and it is provided with the slot 10 into which the end of the weighted lever 6 is received. The upper end of this slotconstitutes the bearing surface against which the lever 6 bears, and in my improvements I make this portion of the fulcrum of hardened metal or other non-wearable material. While there are various ways that this feature might be incorporated in the fulcrum, I have herein shown said fulcrum as provided with a hardened steel pin 11 which extends across the upper end of the slot 10 1 and constitutes the bearing surface against which the lever 6 rests. The pin might be inserted into the fulcrum in a variety of ways, and I have herein shown it as being driven into an aperture drilled transversely through the head ofthe fulcrum.

In Figs. 2 and 3 the fulcrum is made with the bridge portion 12 that extends across from one side of the slot to the other and which forms a firm backing for the pin 11. This bridge portion is cut away to form the inclined wall 13 so as to allow free movement of the lever 6. The advantage of this construction is that the pin 11 is supported for its entire length and there is no liability that it will bend or give.

In Fig. 4' I have shown an embodiment of my invention where the bridge portion 12 is omitted. In this embodiment, the two sides of the slot '10 are disconnected at their upper ends and the pin 11 is driven through the two side walls of the slot. There the backing 12 for the pin is omitted, it may be necessary to make the pin slightly heavier to withstand the strain, but the construction shown in Fig. 4 has the advantage that it is perhaps easier to manufacture. In

'Fig. 4 I have also shown an embodiment wherein the fulcrum is made of two parts which can be adjusted relative to each other so as to vary thevertical position of the fulcrum point without necessitatingthe re moval of the lever 6. As shown in Fig. 1, V

the head portion of the fulcrum which con tains the slot 10is provided with a screwthreaded stem 15 that screw-threads into the head .16 formed integral with the 'screwthreaded shank 9. I will preferably use a right-hand screw-thread on one of the parts and a. left-hand screw-thread on the other. In the drawings I have shown the shank 9 as having a right-hand screw-thread thereon and the stem 15 as having a left-hand screw-thread. With this construction it will be seen that by simply turning the shank 9 the fulcrum point may be raised or lowered without disturbing the position of the lever 6 and because right and left screwthreads are used on the two parts 9 and 15, a turning movement of the shank 9 to screw it farther down into the roller beam 8, will operate to draw the stem 15 down into the head 16. The effective movement, therefore, of the fulcrum point will be that due to the combined action of the two threads and the desired adjustment of the fulcrum point may be secured by a very slight turning movement of the shank 9. The head 16 will preferably be flatsided so that a wrench may be readily applied thereto.

My invention is not limited to the exact construction shown, or in any way exceptas specified in the appended claims.

In Figs. 2 and 3 I have shown the fulcrum as provided with the portion of reduced diameter at 17 between the screwthreaded shank 9 and the head. The purpose of this construction is to permit the fulcrum to be readily bent at this point in order to bring the slot 10 in the head into proper position, in case the aperture in the roller beam 8 for the shank 9 should not be bored correctly.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is:-

1. In a top roll saddle mechanism, the combination with a top roll saddle and a weighted lever connected thereto, of a fulcrum for the lever formed with a slotted upper portion, the wall on each side of the slot being provided near its upper end with a centrally-situated pin-receiving aperture, and a hardened steel pin received in said apertures and extending across the upper end of the slot thereby to form a bearing for the weighted lever and whereby the bearing point is situated in the vertical axial line of the fulcrum.

2. In a top roll saddle mechanism, the combination with a top roll saddle and a weighted lever connected thereto, of a roller beam, and a two-part fulcrum for the lever, one part having a shank screw-threaded into the roller beam and a head, the other part having a shank screw-threaded into said head and also provided at its upper end with a slot extending from one side to the other thereof and adapted to receive the end of the lever, the screw threads on the two parts beingin opposite direct-ions.

8. In a top roll saddle mechanism, the combination with a top roll saddle and a weighted lever connected thereto, of a roller beam, a two-part fulcrum for the lever, one part having a shank screw-threaded into the roller beam and a head, the other part having a shank screw-threaded into said head and also provided at its upper end with a slot extending from one side to the other thereof and adapted to receive the end of the lever, the screw threads on the two parts being in opposite directions, and a hardened steel pin extending across the slot and forming a bearing for the lever.

a. In a top roll saddle mechanism the combination with a top roll saddle and a weighted lever connected thereto, of a fulcrum for the lever formed with a slotted head portion, a hardened steel pin extending across said slot near its upper end and secured in the opposite walls thereof, the portion of the fulcrum bridging the upper part of the slot engaging said pin and forming a firm, substantial backing therefor and being formed with the tapered faces 13, substantially as described.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

ISSACHAR WV. DOEG.

Witnesses:

JOHN E. YOUNG, STEWART WV. Lown.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

